
\begin{table}
\caption{Regression estimates of the association between IGO memberships and CPA implementation at the post-CPA year level. Implementation scores range from 2 to 95. See text for detailed description of estimators.}
\begin{center}
\begin{scriptsize}
\begin{tabular}{l D{.}{.}{5.3} D{.}{.}{3.3} D{.}{.}{3.3}}
\toprule
 & \multicolumn{1}{c}{Within-Between random effects for post-conflict periods} & \multicolumn{1}{c}{Prais-Winsten FGLS with conflict-specific AR(1) autocorrelation and PCSEs} & \multicolumn{1}{c}{Country FE and robust SEs} \\
\midrule
IGOs with high economic leverage (within effect)    & 18.30^{*} &            &            \\
                                                    & (3.67)    &            &            \\
IGOs with high economic leverage (between effect)   & -0.94     &            &            \\
                                                    & (16.09)   &            &            \\
IGOs with high economic leverage (composite effect) &           & 13.34^{*}  & 18.85^{*}  \\
                                                    &           & (2.80)     & (4.66)     \\
All other IGOs (within effect)                      & 1.47      &            &            \\
                                                    & (6.95)    &            &            \\
All other IGOs (between effect)                     & 0.95      &            &            \\
                                                    & (14.45)   &            &            \\
All other IGOs (composite effect)                   &           & 0.56       & -0.02      \\
                                                    &           & (4.26)     & (8.62)     \\
Years since conflict (logged)                       & 12.15^{*} & 14.03^{*}  & 13.54^{*}  \\
                                                    & (1.12)    & (0.63)     & (1.77)     \\
Transitional power sharing government               & -3.29     & -8.17^{*}  & 22.21^{*}  \\
                                                    & (10.23)   & (3.80)     & (7.76)     \\
Dispute resolution committee                        & 14.48     & 8.30^{*}   &            \\
                                                    & (10.42)   & (3.01)     &            \\
Female signatories                                  & 8.17      & 19.84^{*}  &            \\
                                                    & (19.07)   & (4.42)     &            \\
Conflict duration (logged)                          & -1.31     & -1.13      & -50.47^{*} \\
                                                    & (4.63)    & (2.18)     & (4.03)     \\
Battle deaths during conflict (logged)              & 0.22      & 6.16^{*}   &            \\
                                                    & (4.31)    & (1.05)     &            \\
Territorial conflict                                & -8.63     & -8.63^{*}  &            \\
                                                    & (15.03)   & (2.67)     &            \\
Years with mediation  (logged)                      & -0.22     & -11.92^{*} & -60.44^{*} \\
                                                    & (12.31)   & (3.11)     & (6.34)     \\
New leader since CPA                                & 1.05      & 1.51       & 1.53       \\
                                                    & (1.94)    & (2.08)     & (2.60)     \\
Population (logged)                                 & -0.94     & 1.24       & -19.98     \\
                                                    & (5.61)    & (1.81)     & (15.62)    \\
Economic growth                                     & 0.10      & 0.02       & 0.12       \\
                                                    & (0.09)    & (0.08)     & (0.09)     \\
Excluded population                                 & 12.61^{*} & -1.18      & 11.64      \\
                                                    & (4.69)    & (5.53)     & (5.95)     \\
Natural resources                                   & -14.62    & -13.27^{*} &            \\
                                                    & (13.74)   & (2.76)     &            \\
Democracy                                           & 2.87      & 1.91       & 2.76       \\
                                                    & (2.16)    & (2.22)     & (2.47)     \\
GDP per capita before conflict (logged)             & 3.13      & 1.02       &            \\
                                                    & (6.14)    & (2.21)     &            \\
Civil war in neighboring country                    & -4.44^{*} & -3.42^{*}  & -4.32^{*}  \\
                                                    & (1.41)    & (1.37)     & (1.66)     \\
Foreign policy similarity with US                   & -5.23     & 13.09^{*}  & -6.63      \\
                                                    & (8.50)    & (6.41)     & (7.60)     \\
UN PKO troops (logged)                              & 0.47      & 0.51^{*}   & 0.42       \\
                                                    & (0.31)    & (0.20)     & (0.30)     \\
UN PKO police (logged)                              & 0.22      & 0.18       & 0.37       \\
                                                    & (0.45)    & (0.29)     & (0.40)     \\
Region fixed effects (baseline: East Asia)          &           &            &            \\
                                                    &           &            &            \\
\quad Europe & Central Asia                         & -11.53    & -6.93      &            \\
                                                    & (19.37)   & (8.05)     &            \\
\quad Latin America & Caribbean                     & -29.31    & -17.36^{*} &            \\
                                                    & (30.96)   & (8.74)     &            \\
\quad Middle East & North Africa                    & -31.41    & -12.65     &            \\
                                                    & (27.41)   & (13.18)    &            \\
\quad South Asia                                    & -22.22    & -41.06^{*} &            \\
                                                    & (31.92)   & (9.31)     &            \\
\quad Sub-Saharan Africa                            & -22.09    & -19.20^{*} &            \\
                                                    & (19.84)   & (5.89)     &            \\
Intercept                                           & 69.86     & -0.74      &            \\
                                                    & (78.33)   & (28.48)    &            \\
\midrule
AIC                                                 & 2258.55   &            &            \\
BIC                                                 & 2379.44   &            &            \\
Log Likelihood                                      & -1097.28  &            &            \\
Num. obs.                                           & 323       & 323        & 323        \\
Num. groups: pam\_caseid                            & 34        &            &            \\
Num. groups: pam\_year\_count                       & 10        &            &            \\
Var: pam\_caseid (Intercept)                        & 412.70    &            &            \\
Var: pam\_year\_count (Intercept)                   & 0.76      &            &            \\
Var: Residual                                       & 55.22     &            &            \\
R$^2$                                               &           & 0.88       & 0.90       \\
Num. groups                                         &           & 34         &            \\
Adj. R$^2$                                          &           &            & 0.88       \\
RMSE                                                &           &            & 7.44       \\
\bottomrule
\multicolumn{4}{l}{\tiny{Standard errors in parentheses. $^* p < 0.05$ (two-tailed test).}}
\end{tabular}
\end{scriptsize}
\label{tab:m_hligo_r2}
\end{center}
\end{table}
